{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Results : The immunogenicity strategy for T - DM1 used a risk - based , tiered approach that included screening and titration to detect antitherapeutic antibodies ; confirmation of positive responses ; and characterization to assess whether the immune response is primarily to the antibody or to the linker - drug and / or new epitopes in trastuzumab resulting from conjugation ."}
{"Chemical": ["DM1"]}